Physical and Chemical Changes

Front

What are the states of matter?

Back

The states of matter are solid, liquid, gas, and plasma.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances.

Front

Example of a physical change?

Back

Making a paper airplane is an example of a physical change.

Front

Example of a chemical change?

Back

Burning wood is an example of a chemical change.

Front

What happens to the molecules in a solid?

Back

In a solid, molecules are closely packed together and vibrate in place.

Front

What happens to the molecules in a liquid?

Back

In a liquid, molecules are close together but can move past one another, allowing liquids to flow.

Front

What happens to the molecules in a gas?

Back

In a gas, molecules are far apart and move freely, filling the space available.

Front

What is an example of a physical change involving glass?

Back

Glass breaking is an example of a physical change.

Front

What is an example of a state of matter that is not solid or liquid?

Back

Gas is an example of a state of matter that is not solid or liquid.